CN102434121B - Underground low-frequency swabbing vibration unplugging device and application method thereof - Google Patents
Underground low-frequency swabbing vibration unplugging device and application method thereof Download PDFInfo
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- CN102434121B CN102434121B CN201110417746.9A CN201110417746A CN102434121B CN 102434121 B CN102434121 B CN 102434121B CN 201110417746 A CN201110417746 A CN 201110417746A CN 102434121 B CN102434121 B CN 102434121B
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Abstract
The invention belongs to the field of gas field development engineering, and relates to an underground low-frequency swabbing vibration unplugging device with which the plugging of the zone immediate vicinity of an oil (water) well can be solved, and liquid production (water injection rate) of the oil (water) well can be improved. When the underground low-frequency swabbing vibration unplugging device works, oil layer can be unplugged on the zone immediate vicinity of the well through the alternative drive of positive pressure formed by pressing fluid in a shaft and negative pressure formed by sucking the fluid in the shaft, the construction is simple and the operating cost is low.
Description
Technical field
The invention belongs to Oil-Gas Field Development Engineering field, is that a kind of oil removing (water) well near wellbore zone of separating is stopped up, and improves the underground low-frequency swabbing vibration unplugging device of oil (water) well production fluid amount (water injection rate).
Background technology
Along with the prolongation of oil field development time, no matter be oil (gas) well or water injection well, its production capacity index or injectivity index in most cases all can significantly decrease; Its main cause is because shale, deposit, emulsion, paraffin, colloid, asphalitine and other mechanical admixtures stop up pore channel, reservoir permeability is declined, production fluid amount reduces, and seriously restricts and affects oil field development, increases the principal element that cost of production reduces economic benefit; Therefore process recovery near wellbore zone, stratum permeability, just become and in oilfield development process, improve oil-water well output, maintain one of important measures of stable, high yield and raising recovery ratio.
The well stimulations such as acidifying, pressure break are generally taked in oil field, not only when improving oil well output and augmented injection step-down, can to oil reservoir, bring certain injury in various degree, produce secondary pollution, and cost are higher, microorganism and chemical plugging removal technology, period of validity is short, complicated operation, expense is high and easily cause oil reservoir and environment pollution, increases the weight of oil layer blocking and makes oil well fall that product even has no harvest and could not large scale application, physical vibration de-plugging plugging removal effect is good, and can not cause secondary pollution to oil reservoir, there is good application prospect, the device of physical vibration de-plugging at present mainly contains super vibration unplugging and increases oily device (application number 200720104114.6), a kind of self-vibrating oil increaser of pumping unit (application number 200520018865.7), the sound wave clog releasing device that aerated water excites (application number 200610070690.3), oil-well low-frequency acoustic vibration unblocking, yield-increasing apparatus and method (application number 200610113433.3), but their operating principle is all to rely on fluid impact exciting sheet to produce vibration, de-plugging oil reservoir, the vibration wave energy that this class mode of vibration produces is little, and the distance of de-plugging oil reservoir is limited, and the present invention adopts pumping to produce vibration, and vibrational energy is high, and the distance of de-plugging oil reservoir can meet oil field construction requirement.
Summary of the invention
The object of this invention is to provide a kind of underground low-frequency swabbing vibration unplugging device, the negative pressure alternating action forming when the normal pressure forming when pit shaft inner fluid is pushed during the work of low frequency pumping vibration unplugging device and suction is realized oil layer unblocking near wellbore zone, and construction is simple, and operating cost is low.
Described underground low-frequency swabbing vibration unplugging device comprises fluid motor and suction structure, described fluid motor comprises top connection, battery and control chip box, first flow, the second runner and fluid motor plunger shaft, top connection is positioned at fluid motor upper end, in fluid motor plunger shaft, be provided with fluid motor piston, fluid motor piston lower surface has a cylindrical step, fluid motor piston is divided into fluid motor piston upper chamber and fluid motor piston cavity of resorption by fluid motor plunger shaft, first flow, fluid motor piston cavity of resorption, the second runner and fluid motor piston upper chamber are communicated with successively, in the second flow passage entry, be provided with the first electromagnetic valve, in the second exit, runner upper end, be provided with the second electromagnetic valve, in the second runner, be provided with battery and control chip box, fluid motor piston is connected with moving piston by connecting rod, described suction structure comprises lower contact 14, moving piston, moving piston chamber, and lower contact is positioned at suction structure lower end, and moving piston is positioned at moving piston chamber, when the length of fluid motor plunger shaft should guarantee fluid motor piston stroking upward to top, fluid motor piston upper chamber 2 still leaves remaining space.
The thickness of described cylindrical step is 1/5th of fluid motor piston thickness, and the diameter of described cylindrical step is 1.1 times of connecting rod diameter.
When the length of described fluid motor plunger shaft guarantees fluid motor piston stroking upward to top, fluid motor piston upper chamber remaining space thickness is 1/5th of fluid motor piston thickness.
The length of described fluid motor plunger shaft equals 1.4 times of thickness that deduct low frequency pumping vibration unplugging device crossbeam of the length liquid feeding motor piston thickness of connecting rod.
The present invention realizes by following steps:
(1) fluid motor piston is pushed into fluid motor piston cavity of resorption bottom, top connection is connected with tubing round thread, lower contact is threaded with packer, and G.I.H, to needing top, de-plugging stratum;
(2) ground high-pressure pump, by power fluid by oil pipe, enters fluid motor piston cavity of resorption through first flow, starts electromagnetic valve and makes its periodically alternation switch, when the first battery valve is closed, when the second battery valve is opened, the liquid pressure being subject to due to fluid motor piston soffit is greater than the liquid pressure that upper surface is subject to, fluid motor piston stroking upward, fluid motor piston drives moving piston up by connecting rod, fluid in fluid motor piston upper chamber (is comprised to power fluid simultaneously, the oil water mixture itself having in well, and device not have the gas of discharging in time in the liquid that submerges time) through the second electromagnetic valve discharge, the fluid of moving piston top is discharged through moving piston chamber, the fluid of discharging enters the annular space of oil pipe and sleeve pipe formation, finally return to ground, when the first electromagnetic valve is opened, during the second closed electromagnetic valve, when entering fluid motor piston cavity of resorption, power fluid enters fluid motor piston upper chamber through the first battery valve and the second runner, the pressure that power fluid acts on fluid motor piston upper and lower surface is identical, and fluid motor piston upper surface area is greater than soffit area, therefore, the pressure that acts on fluid motor piston upper surface is greater than the pressure of soffit, fluid motor descent of piston, fluid motor piston drives moving piston descending by connecting rod, the first electromagnetic valve and the second electromagnetic valve be alternation switch periodically, under power fluid effect, fluid motor piston moves reciprocatingly, and fluid constantly enters in well, treats that the liquid measure in well is flooded low frequency pumping vibration unplugging device completely, and termination of pumping after fluid motor piston moves to topmost, and shut electromagnetic valve,
(3) packer setting, will need de-plugging stratum and other stratum to separate;
(4) start ground high-pressure pump power fluid is injected to low frequency pumping vibration unplugging device by oil pipe, start electromagnetic valve, when the first electromagnetic valve is opened, the second closed electromagnetic valve, during the first closed electromagnetic valve, the second electromagnetic valve is opened, periodicity alternation switch, the first electromagnetic valve and the second electromagnetic valve rechargeable battery in battery and control chip box provides electric energy, the control chip of switch periods in battery and control chip box controlled, switch per minute 4 ~ 8 times, specifically calculates, adjusts according to stratum stopping state; Thereby promoting fluid motor piston moves reciprocatingly, fluid motor piston drives moving piston to move reciprocatingly by connecting rod, when moving piston is descending, extruding its underpart fluid forms positive pressure is needing de-plugging stratum, when moving piston is up, suction its underpart fluid, formation negative pressure acts on and needs de-plugging stratum, normal pressure and negative pressure hocket and produce vibration, realize and need de-plugging removal of bridge formation.
The present invention compared with the prior art tool has the following advantages: owing to adopting pumping vibration, vibration wave frequency is low, and power is high, and in identical resistance situation, propagation distance is far away, and de-plugging scope is wide; Fluid motor promotes the liquid of piston cycle suction movement piston below, and the normal pressure that can form when liquid is squeezed, can form negative pressure while being sucked, and normal pressure and negative pressure periodically act on pit shaft stratum around, can well remove the obstruction on stratum.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is use schematic diagram of the present invention;
1, top connection; 2, fluid motor piston upper chamber chamber; 3, first flow; 4, low frequency pumping vibration unplugging device crossbeam; 5, fluid motor piston lower chambers; 6, battery and control chip box; 7, the second electromagnetic valve; 8, fluid motor piston; 9, the second runner; 10, connecting rod; 11, the first electromagnetic valve; 12, moving piston chamber; 13, moving piston; 14, lower contact; 15, fluid motor piston lower surface cylindrical step; 16, oil pipe; 17, packer; 18, de-plugging stratum; 19, sleeve pipe.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described, underground low-frequency swabbing vibration unplugging device comprises fluid motor and suction structure, described fluid motor comprises top connection 1, battery and control chip box 6, first flow 3, the second runner 9 and fluid motor plunger shaft, top connection 1 is positioned at fluid motor upper end, in fluid motor plunger shaft, be provided with fluid motor piston 8, there is a cylindrical step 15 fluid motor piston 8 lower surfaces, its thickness is 1/5th of fluid motor piston 8 thickness, diameter is 1.1 times of connecting rod 10 diameters, fluid motor piston 8 is divided into fluid motor piston upper chamber 2 and fluid motor piston cavity of resorption 5 by fluid motor plunger shaft, fluid motor plunger shaft length equals 1.4 times of thickness that deduct low frequency pumping vibration unplugging device crossbeam 4 of length liquid feeding motor piston 8 thickness of connecting rod 10, be fluid motor piston 8 while going upward to top fluid motor piston upper chamber 2 remaining space thickness be 1/5th of fluid motor piston 8 thickness, first flow 3, fluid motor piston cavity of resorption 5, the second runner 9 and fluid motor piston upper chamber 2 are communicated with successively, in the second runner 9 entrance, be provided with the first electromagnetic valve 11, in the second runner 9 exits, upper end, be provided with the second electromagnetic valve 7, in the second runner 9, be provided with battery and control chip box 6, fluid motor piston 8 is connected with moving piston 13 by connecting rod 10, described suction structure comprises lower contact 14, moving piston 13, moving piston chamber 12, and lower contact 14 is positioned at suction structure lower end, and moving piston 13 is positioned at moving piston chamber 12.
The present invention realizes by following steps:
(1) fluid motor piston 8 is pushed into fluid motor piston cavity of resorption 5 bottom, top connection 1 is threaded with oil pipe 15, lower contact 14 is threaded with packer 17, and G.I.H, to needing 18 tops, de-plugging stratum;
(2) ground high-pressure pump, by power fluid by oil pipe 15, enters fluid motor piston cavity of resorption 5 through first flow 3, starts electromagnetic valve and makes its periodically alternation switch, when the first battery valve 11 is closed, when the second battery valve 7 is opened, the liquid pressure being subject to due to fluid motor piston 8 soffits is greater than the liquid pressure that upper surface is subject to, fluid motor piston 8 is up, fluid motor piston 8 drives moving piston 13 up by connecting rod 10, fluid in fluid motor piston upper chamber 2 (is comprised to power fluid simultaneously, the oil water mixture itself having in well, and device not have the gas of discharging in time in the liquid that submerges time) through the second electromagnetic valve 7 discharges, the fluid of moving piston 13 tops is 12 discharges through moving piston chamber, the fluid of discharging enters the annular space of oil pipe 15 and sleeve pipe 19 formation, finally return to ground, when the first electromagnetic valve 11 is opened, when the second electromagnetic valve 7 cuts out, power fluid enters fluid motor piston upper chamber 2 through the first battery valve 11 and the second runner 9 when entering fluid motor piston cavity of resorption 5, the pressure that power fluid acts on fluid motor piston 8 upper and lower surfaces is identical, and fluid motor piston 8 upper surface area are greater than soffit area, therefore, the pressure that acts on fluid motor piston 8 upper surfaces is greater than the pressure of soffit, fluid motor piston 8 is descending, and fluid motor piston 8 drives moving piston 13 descending by connecting rod 10, the first electromagnetic valve 11 and the second electromagnetic valve 7 be alternation switch periodically, under power fluid effect, fluid motor piston 8 moves reciprocatingly, fluid constantly enters in well, treat that the liquid measure in well floods low frequency pumping vibration unplugging device completely, and termination of pumping after fluid motor piston 8 moves to topmost, and shut electromagnetic valve,
(3) packer 17 sets, and will need de-plugging stratum 18 and other stratum to separate;
(4) start ground high-pressure pump power fluid is injected to low frequency pumping vibration unplugging device by oil pipe, start electromagnetic valve, when the first electromagnetic valve 11 is opened, the second electromagnetic valve 7 cuts out, when the first electromagnetic valve 11 cuts out, the second electromagnetic valve 7 is opened, periodicity alternation switch, the first electromagnetic valve 11 and the rechargeable battery of the second electromagnetic valve 7 in battery and control chip box 6 provide electric energy, the control chip of switch periods in battery and control chip box 6 controlled, switch per minute 4 ~ 8 times, specifically calculates, adjusts according to stratum stopping state; Thereby promoting fluid motor piston 8 moves reciprocatingly, fluid motor piston 8 drives moving piston 13 to move reciprocatingly by connecting rod 10, when moving piston 13 is descending, extruding its underpart fluid forms positive pressure is needing de-plugging stratum 18, when moving piston 13 is up, suction its underpart fluid, formation negative pressure acts on and needs de-plugging stratum 18, normal pressure and negative pressure hocket and produce vibration, realize and need 18 de-pluggings of de-plugging stratum.
If need de-plugging depth of stratum to be
h, formation thickness is
h, well radius is
r, the power fluid density of use is
ρ, during de-plugging, the maximum injection pressure in stratum is
p in, under maximum pressure injects, the maximum seepage velocity on fluid injection stratum is
v, fluid motor piston area is
a 1, connecting rod sectional area is
a 2, moving piston area is
a 3, moving piston range is
l.Pumping vibration unplugging device when work (supposing that now in oil jacket annular space, liquid be all power fluid), ground high-pressure pump minimum pump pressure
.
Claims (5)
1. underground low-frequency swabbing vibration unplugging device, it is characterized in that: described device comprises fluid motor and suction structure, described fluid motor comprises top connection, battery and control chip box, first flow, the second runner and fluid motor plunger shaft, top connection is positioned at fluid motor upper end, in fluid motor plunger shaft, be provided with fluid motor piston, fluid motor piston lower surface has a cylindrical step, fluid motor piston is divided into fluid motor piston upper chamber and fluid motor piston cavity of resorption by fluid motor plunger shaft, first flow, fluid motor piston cavity of resorption, the second runner and fluid motor piston upper chamber are communicated with successively, in the second flow passage entry, be provided with the first electromagnetic valve, in the second exit, runner upper end, be provided with the second electromagnetic valve, in the second runner, be provided with battery and control chip box, fluid motor piston is connected with moving piston by connecting rod, described suction structure comprises lower contact, moving piston, moving piston chamber, and lower contact is positioned at suction structure lower end, and moving piston is positioned at moving piston chamber, when the length of fluid motor plunger shaft should guarantee fluid motor piston stroking upward to top, fluid motor piston upper chamber still leaves remaining space.
2. underground low-frequency swabbing vibration unplugging device as claimed in claim 1, is characterized in that: the thickness of described cylindrical step is 1/5th of fluid motor piston thickness, and the diameter of described cylindrical step is 1.1 times of connecting rod diameter.
3. underground low-frequency swabbing vibration unplugging device as claimed in claim 1, is characterized in that: when the length of described fluid motor plunger shaft guarantees fluid motor piston stroking upward to top, fluid motor piston upper chamber remaining space thickness is 1/5th of fluid motor piston thickness.
4. underground low-frequency swabbing vibration unplugging device as claimed in claim 1, is characterized in that: the length of described fluid motor plunger shaft equal fluid motor piston thickness 1.4 extraordinarily the length of connecting rod deduct the thickness of low frequency pumping vibration unplugging device crossbeam.
5. the using method of underground low-frequency swabbing vibration unplugging device as claimed in claim 1, is characterized in that:
(1) fluid motor piston is pushed into fluid motor piston cavity of resorption bottom, top connection is connected with tubing round thread, lower contact is threaded with packer, and G.I.H, to needing top, de-plugging stratum;
(2) ground high-pressure pump, by power fluid by oil pipe, enters fluid motor piston cavity of resorption through first flow, starts electromagnetic valve and makes its periodically alternation switch; When the first closed electromagnetic valve, when the second electromagnetic valve is opened, the liquid pressure being subject to due to fluid motor piston soffit is greater than the liquid pressure that upper surface is subject to, fluid motor piston stroking upward, fluid motor piston drives moving piston up by connecting rod, the fluid in fluid motor piston upper chamber is discharged through the second electromagnetic valve simultaneously, and the fluid of moving piston top is discharged through moving piston chamber, the fluid of discharging enters the annular space of oil pipe and sleeve pipe formation, finally returns to ground; When the first electromagnetic valve is opened, during the second closed electromagnetic valve, when entering fluid motor piston cavity of resorption, power fluid enters fluid motor piston upper chamber through the first electromagnetic valve and the second runner, the pressure that power fluid acts on fluid motor piston upper and lower surface is identical, and fluid motor piston upper surface area is greater than soffit area, therefore, the pressure that acts on fluid motor piston upper surface is greater than the pressure of soffit, fluid motor descent of piston, fluid motor piston drives moving piston descending by connecting rod; The first electromagnetic valve and the second electromagnetic valve be alternation switch periodically, under power fluid effect, fluid motor piston moves reciprocatingly, and fluid constantly enters in well, treats that the liquid measure in well is flooded low frequency pumping vibration unplugging device completely, and termination of pumping after fluid motor piston moves to topmost, and shut electromagnetic valve;
(3) packer setting, will need de-plugging stratum and other stratum to separate;
(4) start ground high-pressure pump power fluid is injected to low frequency pumping vibration unplugging device by oil pipe, start electromagnetic valve, when the first electromagnetic valve is opened, the second closed electromagnetic valve, during the first closed electromagnetic valve, the second electromagnetic valve is opened, periodicity alternation switch, the first electromagnetic valve and the second electromagnetic valve rechargeable battery in battery and control chip box provides electric energy, and the control chip of switch periods in battery and control chip box controlled, switch per minute 4 ~ 8 times; Thereby promoting fluid motor piston moves reciprocatingly, fluid motor piston drives moving piston to move reciprocatingly by connecting rod, when moving piston is descending, extruding its underpart fluid forms positive pressure is needing de-plugging stratum, when moving piston is up, suction its underpart fluid, formation negative pressure acts on and needs de-plugging stratum, normal pressure and negative pressure hocket and produce vibration, realize and need de-plugging removal of bridge formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110417746.9A CN102434121B (en) | 2011-12-14 | 2011-12-14 | Underground low-frequency swabbing vibration unplugging device and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110417746.9A CN102434121B (en) | 2011-12-14 | 2011-12-14 | Underground low-frequency swabbing vibration unplugging device and application method thereof |
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| CN102434121A CN102434121A (en) | 2012-05-02 |
| CN102434121B true CN102434121B (en) | 2014-08-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112539043B (en) * | 2018-05-17 | 2022-08-19 | 罗运川 | Cleaning method and verification method for liquid inlet of piston of underground safety valve |
| CN110644959B (en) * | 2019-11-10 | 2024-07-02 | 陕西贝斯特佳化工产品制造有限公司 | Eight-in-one control device for slowing down stratum extrusion casing wellhead during injection and extraction alternate operation |
| CN115434670A (en) * | 2022-09-05 | 2022-12-06 | 山西沁盛煤层气作业有限责任公司 | Coal-bed gas well swabbing negative pressure blockage removal yield increase method |
| CN117797497B (en) * | 2024-02-28 | 2024-05-31 | 福建紫金选矿药剂有限公司 | Purification equipment is used in production of copper extraction medicament |
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| CN2450377Y (en) * | 2000-10-09 | 2001-09-26 | 中国石油天然气股份有限公司 | Slide valve type hydraulic vibrator for oil well |
| RU2258129C1 (en) * | 2003-12-16 | 2005-08-10 | Дроздов Александр Николаевич | Method and device to apply vibrator seismic action to oil pool |
| CN1936266A (en) * | 2006-09-28 | 2007-03-28 | 北京欧亚科地创新科技有限公司 | Oil-well low-frequency acoustic vibration unblocking and yield-increasing apparatus and method |
| CN201747310U (en) * | 2010-06-18 | 2011-02-16 | 梁博洋 | Automatic vibration source of oil well |
-
2011
- 2011-12-14 CN CN201110417746.9A patent/CN102434121B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2450377Y (en) * | 2000-10-09 | 2001-09-26 | 中国石油天然气股份有限公司 | Slide valve type hydraulic vibrator for oil well |
| RU2258129C1 (en) * | 2003-12-16 | 2005-08-10 | Дроздов Александр Николаевич | Method and device to apply vibrator seismic action to oil pool |
| CN1936266A (en) * | 2006-09-28 | 2007-03-28 | 北京欧亚科地创新科技有限公司 | Oil-well low-frequency acoustic vibration unblocking and yield-increasing apparatus and method |
| CN201747310U (en) * | 2010-06-18 | 2011-02-16 | 梁博洋 | Automatic vibration source of oil well |
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| CN102434121A (en) | 2012-05-02 |
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